Studyboost
StudyBoost.com enables students and teachers to interactively study using text messaging and instant messaging. Students can create/search/contribute a batch of questions and then begin studying those questions using SMS and IM(ghat, Yahoo messenger, facebook chat and more). StudyBoost uses special commands such as 'next' and 'answer' to allow students to control the interaction with the questions and answers. The best part of StudyBoost is its 100% free to use.
To use this service and find out more visit:
studyboost.com
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New Service Puts Texting Back in the Classroom
Press Release
StudyBoost PR